The Contigo West Loop 2.0 AutoSeal Insulated Stainless Steel Travel Mug is made for the modern movers shakers commuters travelers and urban explorers in all of us. The ultimate in on-the-go convenience this thermal mug is leak and spill-proof thanks to AutoSeal technology. Press a button to drink and release to seal after every sip. Thermalock vacuum insulation keeps liquids hot up for to 7 hours or cold for up to 18. The Easy-Clean Lid pops open completely when you're done drinking letting you get into all the nooks and crannies for thorough cleaning. The innovative lid is also one connected piece so there are no parts to misplace when you toss it on the top rack of your dishwasher. Stainless steel bodies are hand-wash only. 100percent BPA-free.